Non-volatile counting method and apparatus
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United States of America Patent
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Jan 19, 1993
Grant Date -
N/A
app pub date -
Nov 30, 1990
filing date -
Nov 30, 1990
priority date (Note) -
Expired
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Abstract
A non-volatile counter memory is provided by using a gray code scale to store counter values in a plurality of counter memories (34) comprising a counter memory group (38). Each counter memory comprises a plurality of units which store a gray coded value. The weighting of the units is changed after a predetermined number of write operations such that the number of bit transitions is spread out among the units.
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